Wagon bolster-spring



(No Model.)

T. G. MANDT.

WAGON BOLSTER SPRING.

No. 593,482. Patented Nov, 9, 1897.

UNITED STATES PATENT OFFICE.

TARGE G. MANDT, OF STOUGHTON, WISCONSIN.

WAGON BOLSTER-S PRING.

SPECIFICATION forming part of Letters Patent No. 593,482, dated November 9, 1897.

Application filed June 7, 1897. Serial No. 639,719. (Nomodeh) To all whom it may concern:

Be it known that I, TARGE G. MANDT, a citizen of the United States, and a resident of Stoughton, in the county of Dane and State of Wisconsin, have invented certain new and useful Improvements in Bolster-Springs for Wagons; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference beinghad to the accompanyin g drawings, which form a part of this specification.

My invention relates to bolster-springs for wagons; and its object is to provide an improved construction of the same which shall possess superior advantages with respect to efficiency in use.

The invention consists, essentially, in providing the bolster near each end with boxes or bearings connected together by a horizontal bar, shackles journaled in said bearings, having their ends bent downwardly at right angles and then extended outwardly at each side of the bolster, the upwardly curved or bowed springs the ends of which are bent around said outwardly extending ends of the shackles, the upper oppositely bowed or curved spring-plates centrally secured to the lower springs and having their ends fitting loosely, and sliding clips secured to bed-pieces connected together at their ends by plates, the construction being such that said springplates will roll together when compressed, as hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a perspective view of a bolster-spring constructed in accordance with my invention. Fig. 2 is a horizontal sectional view on the line 00. m, Fig. 3. Fig. 3 is a sectional view v taken on the line y y, Fig. 2.

In the said drawings the reference-numeral 1 designates a wagon-bolster provided at each end with a standard 2, as usual, for preventing the wagon-body from shifting laterally.

The numeral 3 designates boxes or bearings which loosely rest upon the bolster and are connected together by a horizontal bar 4, bolted thereto, by which they are held in place. Journaled in these bearings are shackles 5, consisting of metal rods having their ends bent downwardly at each side of the bolster and then turned outwardly at right angles, forming arms 6. Bent around these arms are the ends of the upwardly bowed or curved lower spring-plates 7. The numeral 8 desig-. nates oppositely curved or bowed upper spring-plates. These plates 7 and 8 are'cen trally secured to each other by means of clips 9 and bolts 10. The ends of the upper plates pass loosely through and are slidable in clips 12, secured to the ends of spring-bars 13,- located above the bolster. These clips consist of metal plates formed with opposite lugs 14, which are bent inwardly under the same, so as to embrace the springs, and also formed with a downwardly-turned flange 15 at the ends to limit the movement of the said upper springs. The'bars 13 are connected together near their ends by plates 16, bolted thereto.

In use the upper and lower springs will roll together, the ends of the upper springs sliding in the clips, and the shackles swinging under the pressure of the lower springs, the plates 7 and 8 forming compound springs which will get stronger.

It will be seen that the springs are not secured to the bolster in any way, so that they may be readily removed when desired. It will also be seen that in use the ends of the upper springs will slide on the lower side of the clips, by which they are connected to the bolster, while the ends of the lower springs will swing on the shackles. In this manner the springs will roll on each other and compound, so that they will be rendered much more efficient.

Having thus described my invention, what I claim is- In a bolster-spring for wagons, the combination with the boxes or bearings, the horizontal connecting-plate,the swinging shackles journaled in said bearings and the lower upwardly curved or bowed plates connected with said shackles, of the upper oppositelycurved plates secured centrally to said lower springs, the clips in which the ends of said springs slide, the spring-bars to which said clips are secured and the connecting-plates, substantially as described.

In testimony that I claim the foregoing as my own I have hereunto aflixed my signature in presence of two witnesses.

TARGE G. MANDT.

Witnesses:

GILES Dow, ROBE Dow, Jr. 

